140r-84=105r-14

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Solution for 140r-84=105r-14 equation: 



140r-84=105r-14

We move all terms to the left:

140r-84-(105r-14)=0

We get rid of parentheses

140r-105r+14-84=0

We add all the numbers together, and all the variables

35r-70=0

We move all terms containing r to the left, all other terms to the right

35r=70

r=70/35

r=2

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